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Monitoring MarkLogic
This is a quick how-to post for Opsview users who have a need to monitor MarkLogic. The good news is that MarkLogic have released a Nagios plugin. The reference manual is available from...
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Using Mahout Recommenders in Grails
Apache Mahout is a scalable machine learning framework that can be used to create intelligent applications. In this article we’ll see how Mahout can be used to create personalised recommendations...
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Monitoring OpenStack Swift with Opsview
This is a quick how-to for Opsview users who need to monitor an OpenStack (Essex) Swift installation. As a starting point we’ll perform a ‘front door’ check as this should work no matter what Swift...
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Monitoring elasticsearch
elasticsearch is an open source distributed RESTful search engine built on top of Apache Lucene. Like any service or component in your architecture, you’ll want to monitor it to ensure that it’s...
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Free your mind (map) with Groovy
Freemind is an Open Source mind mapping tool. Version 0.9 (released Feb 2011) introduced Groovy scripting that can be used for processing the mind map nodes. In this article we’ll look at a couple of...
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Groovy graphs with Grails and Gremlins
This article provides a practical introduction to graph databases with a focus on the Groovy ecosystem. It explores Grails GORM support for Neo4j as well as query comparisons between the Neo4j Cypher...
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Exploring a UK Open Government Dataset with Neo4j
In my first job I was working for a company that developed a management information system for UK Police Forces; this system produced the statutory HMIC (Her Majesty’s Inspectorate of Constabulary)...
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Neo4j 2.2 Authentication and adding extra users
Token-based authentication is new in Neo4j 2.2, but how does it work? The first thing to know is that it is enabled by default in conf/neo4j-server.properties by: # Require (or disable the requirement...
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Open Gov Data talk at Neo4j London User Group
A call for Lightning Talks was sent out to the Neo4j London User Group, so I put in a few ideas and my Open Gov Data proposal was selected above Authentication (and adding extra users) for the March...
View ArticleQuick tip: Using Git with NiFi Registry in Docker
Apache NiFi is a great tool for handling data flows, however the flow development lifecycle has been slightly challenging. The recent release of NiFi Registry, a sub-project to provide shared resources...
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